hyprland: edit config shortcut

This is used by the flake registry as well as a shortcut for editing
Hyprland config

home/common/nix.nix

@@ -14,7 +14,7 @@ in {
           };
           to = {
             type = "git";
-            url = "file://${config.home.homeDirectory}/nixfiles";
+            url = "file://${config.nixfiles.path}";
           };
         };
       };

home/default.nix

@@ -61,5 +61,12 @@ in
       default = (lib.hasAttrByPath [ "nixfiles" "meta" "wayland" ] osConfig) && osConfig.nixfiles.meta.wayland;
       example = true;
     };
+    path = lib.mkOption {
+      description = "The absolute path of the nixfiles flake";
+      type = lib.types.str;
+      default = "${config.home.homeDirectory}/nixfiles";
+      defaultText = "\${config.home.homeDirectory}/nixfiles";
+      example = "/etc/nixos";
+    };
   };
 }

home/sessions/hyprland/default.nix

@@ -298,7 +298,12 @@ in
           "$mod, mouse_up, workspace, e-1"
 
           # show this file (help)
-          ("$mod, slash, exec, ${terminal} -e ${pkgs.neovim}/bin/nvim '+set nomodifiable' '+noremap q :q<CR>'  " + args.vars.self.outPath + "/home/hyprland.nix")
+          ("$mod, slash, exec, ${terminal} -e ${pkgs.neovim}/bin/nvim '+set nomodifiable' '+noremap q :q<CR>'  "
+          + lib.escapeShellArg (args.vars.self.outPath + "/home/sessions/hyprland/default.nix"))
+
+          # edit this file
+          ("$mod SHIFT, slash, exec, ${terminal} -e ${pkgs.neovim}/bin/nvim "
+          + lib.escapeShellArg (config.nixfiles.path + "/home/sessions/hyprland/default.nix"))
         ];
 
         # repeat, ignore mods